<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	public function __construct($username, $password)
	{
		parent::__construct($username, $password);
	}
	
	const ERROR_EMAIL_INVALID = '__1__';
	const ERROR_PASSWORD_INVALID = '__2__';
	public function authenticate()
	{
		$this->errorCode = self::ERROR_NONE;
		
		$dbUser = User::model()->findByAttributes(array('email' => $this->username));
		if(empty($dbUser)){
			$this->errorCode = self::ERROR_EMAIL_INVALID;
		}else if($dbUser->password != User::model()->encodePassword($this->password)){
			$this->errorCode = self::ERROR_PASSWORD_INVALID;
		}
		
		return !$this->errorCode;
	}
}